@misc{indiciae1dad52a2efd1,
  title = {Theoretical research on electron optics.},
  author = {J Y Ximen},
  year = {1987},
  doi = {10.1002/jemt.1060070413},
  url = {https://pubmed.ncbi.nlm.nih.gov/3505601/},
  note = {Source identifier: 3505601}
}